= Jerrold R. Zacharias
{c}
{tag=Physicist}
{title2=1905–1986}
= Jerrold Zacharias
{c}
{synonym}
= J. R. Zacharias
{c}
{synonym}
An experimental <atomic physicist> who coauthored the molecular-beam method for measuring <nuclear magnetic moments>. Instead of determining a moment solely from a beam's static deflection, the experiment found the <Larmor frequency> in a known <magnetic field>. A resonance-induced loss of focused beam intensity made this frequency measurable with high precision.<The Molecular Beam Resonance Method for Measuring Nuclear Magnetic Moments by Isidor Isaac Rabi and others>[p. 526: frequency measurement and loss of beam focusing]{ref}
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